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Patent number:
Patent Date:
US Patent: 250,080
Spirit Level
Patentee:
Frederic Kraengel (
exact
or
similar
names) - Buffalo, NY
USPTO Classifications:
33/350
,
33/384
Tool Categories:
layout tools
:
levels
:
inclinometers
Assignees:
None
Manufacturer:
Unknown
Witnesses:
Michael J. Stark
Frank Hirsch
Al. Stark
Willie O. Stark
Patent Dates:
Applied:
Feb. 09, 1881
Granted:
Nov. 29, 1881
Patent Pictures: [
1
|
2
]
USPTO
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Report data errors or omissions to steward Joel Havens
Martin J. Donnelly Antique Tools
Description:
Michael J. Stark - patent attorney
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